// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// A class that stores the common state between HttpBasicStream and
// WebSocketBasicHandshakeStream.

#ifndef NET_HTTP_HTTP_BASIC_STATE_H_
#define NET_HTTP_HTTP_BASIC_STATE_H_

#include <memory>
#include <string>

#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "net/base/completion_callback.h"
#include "net/base/net_export.h"
#include "net/base/request_priority.h"

namespace net {

class BoundNetLog;
class ClientSocketHandle;
class GrowableIOBuffer;
class HttpStreamParser;
struct HttpRequestInfo;

class NET_EXPORT_PRIVATE HttpBasicState {
public:
    HttpBasicState(ClientSocketHandle* connection, bool using_proxy);
    ~HttpBasicState();

    // Initialize() must be called before using any of the other methods.
    int Initialize(const HttpRequestInfo* request_info,
        RequestPriority priority,
        const BoundNetLog& net_log,
        const CompletionCallback& callback);

    HttpStreamParser* parser() const { return parser_.get(); }

    bool using_proxy() const { return using_proxy_; }

    // Deletes |parser_| and sets it to NULL.
    void DeleteParser();

    ClientSocketHandle* connection() const { return connection_.get(); }

    std::unique_ptr<ClientSocketHandle> ReleaseConnection();

    scoped_refptr<GrowableIOBuffer> read_buf() const;

    // Generates a string of the form "METHOD PATH HTTP/1.1\r\n", based on the
    // values of request_info_ and using_proxy_.
    std::string GenerateRequestLine() const;

private:
    scoped_refptr<GrowableIOBuffer> read_buf_;

    std::unique_ptr<HttpStreamParser> parser_;

    std::unique_ptr<ClientSocketHandle> connection_;

    const bool using_proxy_;

    const HttpRequestInfo* request_info_;

    DISALLOW_COPY_AND_ASSIGN(HttpBasicState);
};

} // namespace net

#endif // NET_HTTP_HTTP_BASIC_STATE_H_
